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19+14n=-9+12n
We move all terms to the left:
19+14n-(-9+12n)=0
We add all the numbers together, and all the variables
14n-(12n-9)+19=0
We get rid of parentheses
14n-12n+9+19=0
We add all the numbers together, and all the variables
2n+28=0
We move all terms containing n to the left, all other terms to the right
2n=-28
n=-28/2
n=-14
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